Report: Ultimate Guide: CVE-2026-40886 - Argo Workflows: Unchecked annotation parsing in pod informer crashes Argo Workfl...
CVE ID :CVE-2026-40886 Published : April 23, 2026, 7:17 p.m. | 27 minutes ago Description :Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From 3.6.5 to 4.0.4, an unchecked array index in the pod informer's podGCFromPod() function causes a controller-wide panic when a workflow pod carries a malformed workflows.argoproj.io/pod-gc-strategy annotation. Because the panic occurs inside an informer goroutine (outside the controller's recover() scope), it crashes the entire controller process. The poisoned pod persists across restarts, causing a crash loop that halts all workflow processing until the pod is manually deleted. This vulnerability is fixed in 4.0.5 and 3.7.14. Severity: 7.7 | HIGH Visit the link for more details, such as CVSS details, affected products, timeline, and more...